Approximating statistical functions by using fractional polynomial regression

Approximating statistical functions by using fractional polynomial regression
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使用分数多项式回归逼近统计函数

DOI:
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发表时间:
1997
期刊:
影响因子:
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通讯作者:
D. Altman
D. Altman
中科院分区:
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文献类型:
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作者:
P. Royston;D. Altman

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在统计学中,为了使Y和X之间的关系平滑,通常需要一个简单的近似方程。确切的数学形式可以是已知的(但复杂的)或未知的。我们证明了分数次多项式特别擅长提供简洁和准确的公式来表示这种关系。我们给出了几个例子,包括用于均值分析的统计量的5%点的近似,以及用于计算双删失正态样本的标准偏差的无偏因子的近似。
SUMMARY In statistics it is common to require a simple approximating equation for a smooth relationship between Yand X. The exact mathematical form may be known (but complicated) or unknown. We show that fractional polynomials are particularly good at providing concise and accurate formulae for representing such relationships. We give several examples, including the approximation of the 5% point of a statistic used in the analysis of means and of an unbiasing factor for calculating the standard deviation from a doubly censored normal sample.
用高速电影胶片测量水蛙的跳跃性能。
DOI: 10.1242/jeb.188.1.131
发表时间: 1994
期刊: The Journal of experimental biology
影响因子: --
作者:
Marsh,RL;John-Alder,HB
通讯作者: John-Alder,HB